Indoor Football, also known as Arena Football was developed in 1986 as an 8v8 form of Indoor American Football. After an initial few seasons where the game was developed with a 4 team league, a full seasons League with eventually over a dozen teams was developed in the 1990 which was considered by the Wall Street Journal to be a fifth major.
The Arena Football League over-expanded in the 2000s with a Minor League, and its importance (and number of teams) waned since it first experienced financial diffulties in 2009, and it ceased operations after the 2019 season due to the legacy debt incurred.
There is now, however, Indoor Football Leagues all over America, all of which would now be considered Minor League or Semi-Pro (AAA, AA, or even A)
Indoor Football is played on a 50-yard field with two 8-yard endzones, and teams have 5 downs (attempts) to reach the endzone or the ball is turned over. 3 of those downs must be passing plays, making Indoor Football highly explosive and high scoring.
Note: For Women’s Indoor Football Leagues, including both Serious Leagues such as the Super 8 Football League in Baja California (Mexico) and Lingerie/Legends Football Leagues (where the Women wear sexy apparel) see Women’s American Football
Note 2: The American grading system for Pro Leagues is 1. Major League, 2. AAA League, 3. AA League, 4. A League, 5. Semi-Pro State Leagues (equivalent to 1. Premier League / Major League Soccer, 2. EFL/USL Championship, 3. EFL/USL League 1, 4. EFL/USL League 2, and 5. National League/NPSL in the English and American Soccer System).
AAA Arena Football Leagues:
(Overviews): Final Tables & Playoff Results organised on a decade-by-decade or era-by-era basis.
(Seasons): Results & Standings organised on a season-by-season basis. The League Seasons give just that Leagues Results & Standings for the given year i.e. National Arena League 2019 gives just the 2019 season results and Standings for the NAL.
Indoor Football League (Overviews):
Indoor Football League (Seasons):
Arena Football League (AAA National Leagues):
Arena Football League (Seasons):
AA Indoor Football Leagues (Season Overviews)
The AA Arena Football League Season Overviews give the Final Standings of each of the Leagues for the given years (i.e. all 2-3 AA Arena Leagues per year)
AA Indoor Football Leagues (National):
Professional Indoor Football League (Overview):
AA Indoor Football Leagues (East)
Eastern Indoor Football Leagues (Overviews):
National Arena League (Seasons):
AA Indoor Football Leagues (Mid-West):
AA Indoor Football Leagues (South):
Southern Indoor Football Leagues (Overviews):
Champions Indoor Football (Seasons):
AA Indoor Football Leagues (West):
American West Football Conference (Seasons):
A Mexican-American Indoor Football Leagues
Super 8 Football League Baja (Overview):
Super 8 Football League West Coast (Overview):
Super 8 Football League Tournaments (Overview):
Super 8 Football League Tournaments (Seasons):
World Arena Football Leagues
World Arena Leagues (Overviews):
China Arena Football League (Seasons):